this picture shows us fluctuations of temperature on the scale of $10^{-5}$ to $10^{-6}$ Kelvin, if it is from the WMAP survey. It is really hard to give the mapping of primordial density fluctuations and the position of galaxies how we observe them today. My first guess would be the more energy the more matter has formed around there. Maybe you can update the image with another one which has some coordinates and legend attached?
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elcojonJan 12 '13 at 21:46